Question

An electromagnet is based on the heating effect of current.

• A. True
• B. False

Answer 1

The correct option is B False

1. An electromagnet works on the principle of the magnetic effect of current because its magnetism disappears when the current is switched off.
2. An electromagnet is a temporary magnet.
3. When an electric current is allowed to pass through it, one end behaves like a north pole and the other end like a south pole.
4. Polarity of the ends depends on the direction of the current.

Hence, the given statement is false.